The AgentMail alternative with forwarding Routes, approvals and no pricing cliff
AgentMail validated inboxes-for-agents (it announced a $6M seed round). ThreadCamp keeps the parts that work and closes the gaps developers hit: a Free -> $19 -> $79 ladder with no $20-to-$200 jump, programmatic catch-all and alias forwarding Routes with SRS, and per-inbox human-in-the-loop approvals. Both have an MCP server and scheduled send. Competitor plan details checked against their public pricing pages in October 2026; confirm current numbers there before you buy.
AgentMail vs ThreadCamp
| Point | AgentMail | ThreadCamp |
|---|---|---|
| Pricing tiers | Free (3 inboxes, 3,000 emails/mo), Developer $20/mo (10 inboxes, 10,000 emails/mo, 10 domains), Startup $200/mo (150 inboxes) - no tier between | Free -> $19 -> $79 with published metered overage |
| Forwarding / Routes | Per-message forward API only; no routing rules | Catch-all + alias Routes with SRS, unlimited domains |
| Scheduled send | Supported (send_at on drafts) | scheduled_at directly on POST /v1/emails |
| Human approval | No built-in approval queue documented | Per-inbox approve-first policy + approval queue |
| EU residency | Enterprise plan only | eu-west-2 by default |
ThreadCamp is the email API for AI agents: inboxes, sending and forwarding with SRS behind one key.
Other alternatives
Questions
What's the main difference vs AgentMail?
ThreadCamp adds programmatic forwarding Routes and a per-inbox approve-first queue, and prices Free -> $19 -> $79 rather than jumping $20 to $200. Both offer inbox-as-API, threads, webhooks, custom domains, scheduled send and an MCP server.
Switch in an afternoon.
No credit card. Full API, MCP and webhooks on the free tier.